Incandescent lamp socket



'(No Model.)

L. R. PEGK.

INGANDESGBNT LAMP SOCKET. No. 527,285. Patented Oct. 9, 1894.

I 0' PW; I

Ina/Wor- 0M). WWW

} UNITED "STATES:

PATENT; OFFIC LUKE R. PECK, OF ST. J OHNS, MICHIGAN, ASSIGNOR OFONE-HALF TO ROBERT G. STEEL, OF SAME PLACE.

lN CAN DESCENT-LAM P SOCKET.

SPECIFICATION forming part of Letters Patent No. 527,285, dated October9, 1894.

Application filed April 10, 1894. Serial N- 50'7,015- (N0 model.)

To all whom it may concern:

Be it known that I, LUKE R. PEOK, a citizen of the United States,residing at St. J ohns, in the county of Clinton and State of Michigan,have invented certain new and useful Improvements in Incandescent-LampSockets, of which the following is a specification, reference being hadtherein to the accompanying drawings.

The invention consists in the peculiar construction of a lamp socket:first, in the construction of the switch block or body, having a wall ordiaphragm, upon opposite sides of which the terminals are adapted to besocured, so that in working about the socket, inserting the bindingscrews, &c., with tools or other metal instruments the short circuitingof the current is prevented; second, in arranging, on this switch blockor body, fusible strips forming a part of the circuit,

' whereby the short circuiting of the current will burn out but a singlelamp, and further in the peculiar construction, arrangement andcombination of the various parts, all as more fully hereinafterdescribed.

In the drawings, Figure l is a sectional elevation of a lamp socketembodying my invention. I tion thereof. Fig. 3 is a vertical section online a; a; Fig. 2. Fig. 4: is an elevation of the body or switch blockdetached with the connections thereon. Fig. 5 is a detached perspectiveview of the body without the connections.

A A are the conductor wires.

B is the usual casing for the socket, and G is the cap thereof.

The body or what I call the switch block consists of a suitable heador-heads adapted to fit within the casing and the dividing wall ordiaphragm, upon opposite sides of which are the terminals.

The construction which I illustrate consists of two disks D D and acentral wall or diaphragm E. I have shown this-body as made from asingle piece of porcelain, or other suitable insulating material, thedisks and diaphragm made in one piece, but this is not essential, as butone head or disk may be used, and the disks and diaphragm may be madein. separate pieces adapted to be assem- Fig. 2 is a central, horizontalsecbled together in any desired manner. The construction I have shownhowever, I deem the most desirable as it combines strength andcheapness.

The conductor wires A A lead through openings in the disk D to thebinding posts F F which are secured either to the upper disk or to thetop of the diaphragm on opposite sides thereof. These binding posts areconnected by plates G with the binding posts H H, likewise at the top ofthe diaphragm or upon the upper disk.

I are metallic plates or strips secured upon the lower disk and havingsuitable spring arms J, forming contacts for opening and closing thecircuit. These spring arms extend across the end of the central divisionwall or diaphragm, which at that side is cut away to permit of suchextension as plainly shown in Figs. 1 and 2.

L are binding posts on the strips L which connect with the centralcontact L as shown in Fig. 3.

M are fusible strips or wires connecting the binding posts H H with thebinding posts L on opposite sides of the diaphragm.

It is evident that in operating on the screws forming the binding posts,if the screw driver of the operator should slip it will strike againstthe diaphragm and thereby prevent connection with the terminal on theopposite side thereof, which would short-circuit the current. Thus, Iprevent possibility of such accidents.

N is a bearing formed in the diaphragm E and through which the shaftO ofthe switch is journaled. This shaft is provided at one end with asuitable finger piece 0' and at the other end with the cam P foractuating the spring contacts. Connection is made from the switch to thelamp, through the screw Q and ring Q.

My construction entails practically no additional expense over the costof manufacturing the usual sockets, while presenting the advantagesmentioned.

What I claim as my invention is= 1. In a lamp socket, the combinationwith the casing, of an insulated switch block secured in the casingconsisting of upper and lower apertured disks and a vertical diaphragmconnecting the disks, binding posts secured on opposite sides of thediaphragm, binding posts secured on the lower disk, a plate on the lowerdisk, a spring arm on the plate, means for engaging the spring arm withone of the binding posts, and fusible connections between the bindingposts on the disk and diaphragm, substantially as described.

2. In a lamp socket, the combination with the casing, of an insulatedswitch block secured in the casing consisting of upper and lowerapertured disks and a Vertical diaphragm connecting the disks having alateral aperture therein, binding posts secured on opposite sides of thediaphragm, binding.

LUKE R. PEOK. WVitnesses:

J AMES WHITTEMORE, O. F. BARTHEL.

